You just drain your grease in the sink? I bet your pipes gets plugged up. I never drain grease in the sink have it go down the drain. Grease builds up in the pipes over time.
I feel really stupid, I have always drained my ground beef in the sink. That is the only thing I drain in the sink. I normally line a bowl with foil and drain my bacon or turkey or whatever in the foil bowl. I have no idea why I never have done that with ground beef. That is so weird of me. Thank you for bringing this to my attention. I honestly never gave it a thought or realized I did that. Thank goodness I have never had any problems with my pipes. Thanks again and thanks for watching.